Home / 89,320.56-133,940.80-30,140.88

Finding the Fourth Proportional to 89,320.56, 133,940.80 and 30,140.88

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Solution

The fourth proportional to 89,320.56, 133,940.80 and 30,140.88 is: 45,197.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,320.56 : 133,940.80 = 30,140.88 : x
  2. Step 2: Convert to fraction form
    89,320.56/133,940.80 = 30,140.88/x
  3. Step 3: Cross multiply
    89,320.56x = 133,940.80 × 30,140.88
  4. Step 4: Simplify right side
    89,320.56x = 4,037,093,579.90
  5. Step 5: Solve for x
    x = 4,037,093,579.90/89,320.56
  6. Step 6: Final answer
    x = 45,197.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.